Metal



FRANCIS A.. PRAT'IL OF HARTFORD, CONNECTICUT.

Letters PatcntJVo. 93,903, dated August 17 1869.

IIWPRO'VEBEENT IN' MACHINES FOR PLANING METAL.

The Schedulerefen'ed to in these Letters Patent and making part Oi' the same.

To all whomvit may concern Be it known that L'Fnnncis A. PRATT, of the city and county of Hartford, and State of Connecticut, have invented certain new and useful `Improvements in Shipper-Device for Metal-Planen; and to enable others skilled in the art to make and use'the same, I will proceed to describe its constqhftptioh,`r,e ferring to the drawings, iu which the sameiletter indicatelike parts in each of the. figures.

The nature of this invention will be understood from the specification and drawings, the object of which is. saving time in moving the slides or' shippingdogs upon a planer-table, whenever it becomes necessary 'to-run the table 'back beyond the place. where it may be working, as is the case when oiling or changing the work upon the table. It is often the case that this has to be done a great number of times during the day, and as often makes it necessary to unscrew the shipping-dog on the table, which each time makes a nice adjustment necessary.

Now, my improvement obviates this difficulty, and renners but one adjustmentnecessary during the wn'ore time consumed in planing, when the planer is running on the same kind of work, or until the work is removed or changed.

In theaccompan-ying drawings- Figure -1 is an end View of a metal-planer, below the upper side of the sliding bed.

Figure 2 is a side view of the. same. i t',

k is the bed of the machine.

lc is the table7 upon which Jthe work is the common way. y, f,

k" are the supportinglegs. I mare driving-pulleys, arranged upon the shaft, 'in'.

o are arms, or belt-guides, which chang'y 0i: guide the belt from one pulley to the other. 1 gi care adjustable'stops,secured to theedgeof ,the table-bed k', by means of set-screws or bolts,

a'is a grooved oscillating cam, arranged upon a shaft, I), all of which are constructed and actuated in the common way.

g isa sliding.shipper-block, which is fitted and works back and folth upon the projecting edge ofthe' bed lo, also in the common way. u

d is an oscillating or swinging dog, secuiied upon the block g, and. turned over toward the bed L, and v between the stops e.

fis a stud-pin, secured in the lower portion rof the box g, the lower end of which, or a friction-wheel there on, works in the groove a of the cama', which is arranged and oscillates with the shaft b, the `latter having a projecting arm, b, which connects with the shaft b', upon which the belt-shippers c are arranged.

4Thus it will be seen that whenl motion isonc giyen 't0 the machine inthe commou'way, and the dog at' is turned in toward the bed k, and between the' stops'e, it will be acted upon thereby, and by their-"action the stud-pin, or roller thereon, will work in the groove a of the cam a', and produce a rolling or reciprocating motion of the shaft b,and thereby of the arm bon said shaft b, which actuates or changes the guides c alternately from one pulley to the other.

I do not wish to confine myself to the use of the hinged swinging dog d, as the same result maybe produced in various equivalent ways, as in Figure 4, by providing the adjustable stops e with a.hingepiece, h, which can be lifted to allow the stops to pass the shipper-box g.

In Figure 5 is another modification, to produce the same -result, where a pin, t', is arranged to operate through the stops e, which alternately strike an elevation, g', formed or secured on the shipper-box In Figure 6 is shown how the same result 'may beL produced by a horizontal-sliding pin, h, which moves in a line, at right angle with the side of the bed, upon which the work is secured, the end of which interposes between the stopsie.

All these, and many more or other 4equivalent ways,

`may be arranged to produce tlesame result. But

I chose and believe `that the swinging piece d, as shown, is the best adapted, and most convenient for use.

When the workman has his work -upon the table,

vespecially if it is short work, it comes so far under to swing, or remove this piece d from between the stops o, when the table is free to be moved to any desirable place' upon its ways, without loosening or changing the stops e, thereby saving much vexatious trouble and loss of time; and after removing the piece of work from the table, and replacing another, he has only to run the table up, and swing or place the movable stop d between the stops c, which puts the whole apparatus back in the same place, without the necessity of resetting the shipping-dogs 'or stops e.

I believe -I have thus shown the nature, construction, and adaptation of this improvement, so as to enableA others skilled in the art to make and use the same therefrom.

What I claim, and desire to secure by Letters Pat.- ent, is-

v The arrangement of the swinging dog d upon the sliding block y, in combination with the bed It', stops e, pin f, cam a', upon the shaft b, gearconnectiou b', and guide-arms o, to connect and disconnect the shipper fromthe bed k', substantially as set forth.

FRANCIS A. PRATT. -[L n.1

YVit-nesses v E. W. Bmss, J. W; Buss. 

